Lenovo — improper display

Address:

Uttara Kannada, Karnataka

From three to four months before this blurring of the monitor is occurring, i had purchased this desktop from Synergy Technology Karwar (Phone no:[protected]), while operating of the system the monitor turns to the below type (posted in picture) .After repeated pleading to the dealer he is not corresponding to the issue. I want my desktop to be repaired as early as possible.